ASTROSAT CZTI

Data Quality Report

Orbit 51994

Creation date: 2025-05-10T11:24:13.552776
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T06_9000006468_51994cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51994cztM0_level2_quad_clean.evt
Size (bytes)760,017,60091,103,040
Size724.8 MB 86.9 MB
Events in quadrant A5,166,785602,697
Events in quadrant B4,308,485691,699
Events in quadrant C6,434,177561,456
Events in quadrant D11,676,870409,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200971
B0177530
C0241590
D0396100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70714526.392307%
B70721562.205882%
C707292413.065611%
D7072249435.265837%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7071 7071 407 407 5.76% 5.76%
B 7072 7072 99 99 1.40% 1.40%
C 7072 7072 816 816 11.54% 11.54%
D 7072 7072 2532 2532 35.80% 35.80%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 243 796729 4532.78 704 686 175.6
A 4 95 345959 1966.03 704 686 175.6
A 7 64 344405 1957.18 704 686 175.6
B 4 206 253753 1660.01 716 690 152.4
B 10 128 160863 1050.68 716 690 152.4
B 0 172 118871 775.23 716 690 152.4
C 15 224 2195038 11813.37 664 658 185.8
C 4 5 496519 2669.45 664 658 185.8
C 13 3 430299 2312.96 664 658 185.8
D 6 42 3876188 22460.42 608 580 172.6
D 12 16 2341554 13566.71 608 580 172.6
D 12 17 1018175 5897.29 608 580 172.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter